Barcelona have been left to sweat over Lionel Mess's most recent injury, as the star has returned to Spain for treatment after picking up a groin problem during Argentina's World Cup qualifying match against Uruguay last Tuesday.
The forward scored the only goal of the match, but things ended quite badly for him.
Initially, it was thought that the injury was not that serious and that Messi would be available for his country's next fixture against Venezuela on Tuesday, however, he has been sent back to Spain to receive treatment.
"My groin hurts a lot. It is messed up and it could get worse," he remarked.
"I always want to play, but the truth is that the season is just starting and there are a lot of important matches ahead of us."
Spanish newspaper AS worsened Barcelona fans' fears with their Sunday headline which reads:
The La Liga champions are set to face Alaves in their next league game on Sunday, and have a Champions League group stage match as well as an away fixture against Leganes before playing Atletico Madrid at home.